Sentences with phrase «of juvenile survival»

Social practices of juvenile survival and mortality: Child care arrangements in Mexico City.

Not exact matches

And then get loose to infect wild juveniles, threatening the very survival of wild salmon populations.

Kristen Marhaver, who began this work while she was a postdoctoral researcher at the University of California at Merced, USA, said: «Now that we've successfully reared juvenile Pillar Corals in the lab, not only can we study them in more detail to find out what factors could be threatening their survival in the wild, but it also means that we can try to out - plant a small number back to the reef.

«In the wild, larger social groups of N. Pulcherrepresent a low - risk environment with enhanced juvenile survival.

Restrictions on use of drift gill nets, which have a high rate of bycatch, have improved the survival of juvenile sharks.

Our estimate of reproductive success spans the stages of gamete production, mating, spawning, egg - to - fry emergence and juvenile survival, and selection could have acted at any or all of these times.

Captive breeding continued for the Santa Rosa Island fox (Urocyon littoralis santarosae) until 2008 when all foxes were returned to the wild.The annual survival rate climbed to 90 % in 2007 - 2009, but the incidental arrival of three juvenile golden eagles in spring 2010 caused survival to dip in that year.

Evaluation of the Captive Care and Post-Release Behavior and Survival of Seven Juvenile Female Hawaiian Monk Seals.

Comparison of survival and behavior of rehabilitated and free - ranging juvenile Southern sea otters (Enhydra lutris nereis).

[43] Insufficient nourishment leads to lower reproductive rates in adult females and lower survival rates in cubs and juvenile bears, in addition to poorer body condition in bears of all ages.

Each year, billions of captive - bred juvenile salmon are released into rivers in North America, Asia and Europe to give a bump wild populations, but their survival is 10 to 20 times lower than that of wild salmon, notes the study.

Juvenile salmon with acoustic tags tend to have lower survival rates than juvenile salmon with other types Juvenile salmon with acoustic tags tend to have lower survival rates than juvenile salmon with other types juvenile salmon with other types of tags.

For example, reductions in seasonal sea ice cover and higher surface temperatures may open up new habitat in polar regions for some important fish species, such as cod, herring, and pollock.128 However, continued presence of cold bottom - water temperatures on the Alaskan continental shelf could limit northward migration into the northern Bering Sea and Chukchi Sea off northwestern Alaska.129, 130 In addition, warming may cause reductions in the abundance of some species, such as pollock, in their current ranges in the Bering Sea131and reduce the health of juvenile sockeye salmon, potentially resulting in decreased overwinter survival.132 If ocean warming continues, it is unlikely that current fishing pressure on pollock can be sustained.133 Higher temperatures are also likely to increase the frequency of early Chinook salmon migrations, making management of the fishery by multiple user groups more challenging.134